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Structure of the Q237W mutant of HhaI DNA methyltransferase: an insight into protein-protein interactions
Biology and Chemistry Report
  •   Structure Details   Hide

    Structure Keywords

    Keywords TRANSFERASE
    Text DNA methyltransferase, protein-protein interactions, evolutionary link, Type I and II restriction-modification systems, TRANSFERASE

    Polymeric Molecules

    Chain A,B
    Description Modification methylase HhaI 
    Mutation Q237W 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 37100.6 
    Source Method genetically manipulated  
    Entity Name Cytosine-specific methyltransferase HhaI, M.HhaI 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    SAH  S-ADENOSYL-L-HOMOCYSTEINE  C14 H20 N6 O5 S   384.41  View 
    SO4  SULFATE ION  O4 S   96.06  View 
    UNX  UNKNOWN ATOM OR ION  X   0.00  View 
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B MTH1_HAEPH P05102     

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc Catalytic Site(s)
    A B        
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    6306   DNA Methylation  The Covalent Transfer of a Methyl Group to Either N 6 of Adenine or C 5 or N 4 of Cytosine. 
    9307   DNA Restriction Modification System  A Defense Process Found in Many Bacteria and Archaea That Protects the Organism From Invading Foreign DNA by Cleaving It with a Restriction Endonuclease. the Organism's Own DNA Is Protected by Methylation of a Specific Nucleotide Which Occurs Immediately Following Replication in the Same Target Site As the Restriction Enzyme. 
    32259   Methylation  The Process in Which a Methyl Group Is Covalently Attached to a Molecule. 
    90116   C 5 Methylation of Cytosine  The Covalent Transfer of a Methyl Group to C 5 of Cytosine in a DNA Molecule. 
    3677   DNA Binding  Any Molecular Function by Which a Gene Product Interacts Selectively and Non Covalently with DNA (deoxyribonucleic Acid). 
    3886   DNA (cytosine-5-)-methyltransferase activity  Catalysis of the Reaction: S Adenosyl L Methionine + DNA Containing Cytosine = S Adenosyl L Homocysteine + DNA Containing 5 Methylcytosine. 
    8168   Methyltransferase Activity  Catalysis of the Transfer of a Methyl Group to an Acceptor Molecule. 
    16740   Transferase Activity  Catalysis of the Transfer of a Group E.g. a Methyl Group Glycosyl Group Acyl Group Phosphorus Containing or Other Groups From One Compound (generally Regarded As the Donor) to Another Compound (generally Regarded As the Acceptor). Transferase Is the Systematic Name For Any Enzyme of EC Class 2. 

  •   Gene Details   Hide

    Genetic Source

    Chain A,B
    Scientific Name Haemophilus haemolyticus  
    Genus Haemophilus
    Gene hhaim
    Host Scientific Name Escherichia coli  
    Host Genus Escherichia